CVE-2026-124194
Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
Actively exploited
- In the CISA exploited-vulnerabilities catalogue since Nov 10, 2026
- US federal agencies must remediate it by Nov 24, 2026 (BOD 22-01)
- Attacked 1 day before the vulnerability was made public
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Source: CISA KEV · Nov 10, 2026 Nov 10, 2026 Nov 10, 2026
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NAffected products
| Vendors | Product | Versions |
|---|---|---|
| microsoft | 365 apps | - |
| microsoft | office 2021 | - |
| microsoft | office 2024 | - |
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